Vulnerability Description
The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstream switch after the first tag has been stripped, as demonstrated by Yersinia, aka "double-tagging VLAN jumping attack."
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vlan Protocol | Vlan Protocol | 802.1q |
References
- http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html
- http://www.securityfocus.com/archive/1/419831/100/0/threaded
- http://www.securityfocus.com/archive/1/419834/100/0/threaded
- http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040333.html
- http://www.securityfocus.com/archive/1/419831/100/0/threaded
- http://www.securityfocus.com/archive/1/419834/100/0/threaded
FAQ
What is CVE-2005-4440?
CVE-2005-4440 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The 802.1q VLAN protocol allows remote attackers to bypass network segmentation and spoof VLAN traffic via a message with two 802.1q tags, which causes the second tag to be redirected from a downstrea...
How severe is CVE-2005-4440?
CVE-2005-4440 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2005-4440?
Check the references section above for vendor advisories and patch information. Affected products include: Vlan Protocol Vlan Protocol.